What the hell is this? Potentially explosive nail gun...

[wyn]

Probably similar to a blank firer.

The more vent holes the less oomph to drive the nail in.

 

[Beanwood]

Nothing needed. The same with blank cartridges.

I think they often send them by post which shouldn't really be done.

Nothing stopping boxes of .22 blank cartridges being sent by post as far as I know? They are used widly in starting pistols (Hard plastic noise making machines) or dummy launchers - compressed air launching the dummies 50yards down the field...

 

[ELL]

I remember on one job I was on we used a hilti gunpowder gun that shot concrete anchors into the concrete that we drilled holes for. There was a brief 10 minute instruction meeting on how to use it we all attended and that was it. Then we got a card type thing to hold onto to prove we attended the meeting. No serious training or anything.

 

[Trevorleach]

Yeah but can you tell the difference between the four images? I can’t…

Anyways - it was a (free) curiosity. Next time I want to frighten the neighbourhood cats I’ll dig it out!

I had a quick look at mine yesterday and basically there are four small allen screws screwed into the barrel assembly, the more screws you remove the more of the charge escapes and the less impact on the nail.